[boost] boost::function feature request?

From: Peter Dimov (pdimov_at_[hidden])
Date: 2004-11-04 10:48:30

When using boost::function<bool()> to implement event callbacks such as 
is_visible or is_enabled, it's very convenient to pass 'true' or 'false' 
directly, instead of going through bind( identity<bool>(), true ). An UI 
button I recently did even had separate bool properties in addition to the 
callback events for these reasons.

I wonder whether it's reasonable to add

    this_type& operator=( T const & t );

to function<T()> that does the obvious thing.

Of course f = t; is merely a shorthand way of spelling f = 
boost::lambda::constant(t), but a dependency on lambda isn't always 
desirable.

Thoughts?

--
Peter Dimov
http://www.pdimov.com